Great Crosby, commonly known as just "Crosby" is a town in Sefton, Merseyside, North West England.
Crosby grew up during the late 19th and early 20th century and comprises a number of distinct areas with their own character.
- Blundellsands: middle class residential area close to the sea front
- Crosby: the main area for shops, pubs and restaurants
- Thornton: mainly 1930s era residential area, semi-detached and detached housing
Crosby has a cinema, two fee-paying schools (Merchant Taylors' and St Mary's) and a pleasant park facing the sea.
Great Crosby was an urban district in its own right but merged with Little Crosby and Waterloo with Seaforth in the early 20th century and was then absorbed into the new Sefton district.